Shuttle



June 26, 1928. 1,675,303

P. L. SPENCER v SHUTTLE Filed March 28, 1925 HIIHHIIJI liwenivr:

- WW I waif A41 mrm 4a to Patented June 26, 1928.

UNITED STATES 1,675,303 PATENT OFFICE.

IPHILI]? I4.

' l, SPENCER, OF MILLBURY, MASSACHUSETTS, ASSIGNOR T0 J. H. WILLIAMS COMPANY, OF UTICA, NEW YORK, A CORPORATION OF NEW YORK.

SHUTTLE.

Application filed March 28, 1925. Serial No. 19,029.

The present invention relates to an improvement in shuttles.

In weft replenishing shuttles for fine filling, the ordinary construction of eye does not afiord suflicient resistance to the passage of yarn through the eye to secure laying the yarn properly in the shed. One object of the invention is to improve the thread block of the shuttle to provide a tension for the yarn of such character and construction as to apply the requisite drag to the thread, and at the same time to avoid, the possibility of entanglement of the yarn in the tension.

Also insuch shuttles there sometimes occur slender openings betwe'n the eye and the wood of the shuttle which, with ordinary sizes of thread, have no significance, but which, in very fine numbers, offer an opportunity for catching the thread .as it enters the eye from'the thread block. Another object of the invention is to so reconstruct the thread block as to avoid the exposure of the thread to a line of juncture of the wood of the shuttle and the metal of the thread block. To these ends the invention consists in the shuttle hereinafter described and particularly.defined in the claim.

In the acoompanyin drawings illustrating the preferred form of the invention, Fig. 1 -is a plan of the delivery end of a shuttle,

showing the thread block in position; Fig. 2 's a front elevation of the same; Fi 3 is a front elevation of the thread block; i 4 is a transverse vertical section of the t read block, taken on the line .4.4, Fig. 3; Fig. 5 is an end elevation of the thread block, looking toward the outer end of the block; and Fig. 6 is a section similar to Fig. 4, of a slightly modified form hereinafter referred The shuttle is described as follows: The usual shuttle body 10 has'the bobbin opening 11 and tip 12. The thread block 13 is mounted in the shuttle body at the delivery end of the shuttle, the thread being drawn from the bobbin 14 and passing through the passageways of the thread block and being delivered at the delivery eye 15. The thread block, aside from features hereinafter referred to, is of ordinary construction. It has the usual thread passage 16, the beak 17 and horn 18. In the middle of the thread passage is provided the tension device indicated in a general way by the reference character 20. This tension device consists of two tension memshuttle.

bers 21 and 22, having their lower ends provided with holes to receive the pin 23. From their lower ends the members 21 and 22 eX tend upwardly for a distance parallel to each other, and then they gradually bend apart, as shown in Fig. 4, the extreme upper ends being received in recesses 24; and 25 in the shuttle block Two coil springs 26 and 27 press against the outer sides of the two tension members 21 and 22. These springs are received in holes 28 and 29 in the thread block, and take against the cross pins 30 and 31.

It will be seen that there is no possibility of the yarn entering the thread passage getting caughtaround the lower ends of the tension members, because they are threaded on the pin 23, nor is there any possibility of the yarn becoming looped about the upper ends of the tension members because such upper ends are received in the recesses 24 and 25 of the thread block.

When the thread from the bobbin is drawn across the thread passage, it descends thereinto and is received between the opposing faces of the tension members 21 and 22. As soon as, in the operation of threading the block, the thread has descended to the delivery eye 15, it will have been depressed into the thread passage and find itself between the opposing pressures of the .two tension members, which will act to apply a frictional resistance to the movement of the thread through the thread block.

The thread, in entering the block, descends first through the inner opening1 32 of the thread passage, and presently nds its way around the beak 17 of the block mto the depression 33 in the outer end of the On the next pick of the shuttle, that is to say, the pick to the right, the thread will descend through the threading passage 34 to the delivery eye 15. During this movement of the yarn it engages only the beak 17 the horn 18, the thread guide 35 and wear piece 36.

In the ordinary construction of weft replenishing shuttles there is a joint between. the forwardly extending portion 37 of the shuttle block and the wood of the shuttle at 38, into which the yarn, especially in the case offine members, is liable occasionally to enter and to catch andcause a breaks. e of the yarn. But in the construction 0 the shuttle forming the subject of this invention,

et in the block, an

twist of thread, upon its approaching the tension device, is guided by these lips in between the tension members, and the cutting or breaking of the thread on the edges of the tension members is avoided.

In Fig. 6 is shown a slightly modified form of tension device wherein one-spring 40 (corresponding to the spring 27 in the other form) is supported in a sprin sockpresses against t e tension member 22, and an adjustable spring device is employed on the other side to bear against the tension member 21. This adjustable member consists of a spring 41 which is backed by a screw 42. By screwing this screw 42 in or out, the pressure of the springs on the tension members may be increased and decreased.

Having thus described the invention, what is claimed is:

A shuttle for weft replenishing looms havieces, to-

ing, in combination, a thread block provided with a longitudinal thread passage contracted and narrowed at both ends and widing curved lips on their vertical entering edges to guide the yarn from the bobbin in between the tension members without danger of cutting or breaking it on the occurrence of a lump in the yarn, and provided with holes in their lower ends, a pin passing through the thread block and through theholes to secure the lower ends of the tension in place, then per ends of both thread engaging members ing bodily curved outwardly on long, smooth, gentle curves, and the thread block being provided with re'- cesses to receive and cover the outwardly turned ends of the tension members actin also to contribute to su porting and hol ing the members in position in the thread block and also provided with two spring holes below the recesses, and two springs above the pin located in said sprin holes pressing against the outer sides of te tension members and fixed abutments for the springs.

In testimony whereof I have signed my name to this specification.

PHILIP L. SPENCER. 

